Dates
- Epoch milliseconds. Some Virginia sources store dates as numbers of milliseconds since 1970, for example
1696118400000. Convert before displaying. - Placeholder dates. D.C. sales use
1900-01-01when the date is unknown. Treat it as missing. - Last sale in
summary. The latest sale is chosen by comparing dates as text, so with the formats abovelast_sale_priceandlast_sale_datecan come from an older sale. When the sale matters, checkalternativesor read the salerecords.
Coverage gaps
- Maryland has no bedroom or bathroom counts.
- Entity types differ by state. Maryland has no parcels or units; Virginia has no tax accounts or units. See Entities by state.
Duplicates
- Arlington tax payments appear twice: once from the county’s bulk file and once from its API. Deduplicate on the payment fields when you total them.
Catalog
catalogwith a county code returns the whole state’s sources.- Field statistics (
fill,example) come from a 2,000-record sample.
History
Each source has been published once so far, sohistory returns one version per record. Versions and removals appear as sources are refreshed.